diving beetle

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Before they dive, they collect air bubbles in their wing cases which goes through the spiracles.The jaws of a great diving beetle are strong compared to their body size.…

The great diving beetle, Dytiscus marginalis, is a large aquatic diving beetle native to Europe and northern Asia, and is particularly common in England.The great diving beetle, true to its name, is a rather sizable insect.…

Thermonectus nigrofasciatus is a species of diving beetle native to the eastern United States.T. nigrofasciatus is distinguished by its black, postmedian tranverse blotch on its elytra, hence "nigrofasciatus."…

Speciation has been observed to be a possible consequence of sexual coercion.In diving beetle species family Dytiscidae, an intersexual arms race occurs between males and females.Males have evolved suction cup structures on their forelegs to help grasp females; females have counter-evolved setose dorsal furrows to impede forceful copulation.…

The adult beetle reaches a maximum length of about one centimeter, or half an inch, with females slightly larger than males.The sunburst diving beetle has a black and streamlined carapace covered with bright yellow or golden spots.The male has a suction disk on each foreleg.…

The diving-beetles are skimming about, rowing themselves along with their flattened hind legs.Every few minutes they come to the surface and lift their wings to get a little air under them, then down they go into the brook.…Cited from Little Busybodies, by Jeanette Augustus Marks and Julia Moody

Pumping movements of the body force the air through the system.Some species of diving beetles (Dytiscidae) carry a bubble of air with them whenever they dive beneath the water surface.This bubble may be held under the elytra or it may be trapped against the body using specialized hairs.…

Copelatus is a large genus of small diving beetles.There are some 470 described species in the genus, found worldwide, but they are most diverse in tropical South America, Africa and South-East Asia.…

Thermonectus sibleyi is a species of diving beetle native to western Mexico and southern Arizona, United States.T. sibleyi reaches a total length of and has an overall light, speckled color pattern.…

They still have grooved maxillae and their tentoriolacinial muscle does not attach to the mesal stipial base.Their larvae, like those of predaceous diving beetles, do not possess eggshell-bursters on the head.It is not yet resolved whether Haliplidae and Dytiscidae are closest relatives, or whether they originated independently from the basal Adephaga.…

Neoporus is a genus of beetle in the family Dytiscidae.These are the predaceous diving beetles, a family of water beetles.Their larvae are commonly known as water tigers.…

In the wild, these beetles are useful because they eat other invertebrates including mosquito larvae and pupae.Spotted diving beetles have also been observed swarming a prey item and feeding en masse.In captivity, these beetles will feed on flake fish food and live crickets.…

Megadytes is a mainly Neotropical genus of large diving beetles in family Dytiscidae.

As a Site of Special Scientific Interest, it is a nationally important site for great crested newts.Species of special interest include great diving beetles, Small Red-eyed Damselfly and tree sparrow, along with a number of acid grassland plants.…

Guarding allows the males to assure their paternity.A classic example occurs in diving beetles, family Dytiscidae.After copulation, males continue to guard females for up to six hours.…

To get the females to submit, males shake the females violently and keep them submerged underwater (diving beetles cannot go long without atmospheric oxygen).Unable to get air, female diving beetles submit to the male's advances in order to avoid drowning (and they lose the energy to resist).…

Grasping traits can also be considered as a way of males expressing mate-guarding.Examples of species with grasping traits are water striders and diving beetles.During forced copulation, male water striders (genus Gerris) attack females.…

Once the males grab on, a struggle ensues akin to a rodeo, where males try to hold on while females violently shake them off.Another type of modification is found in male diving beetles (of the family Dytiscidae), who are equipped with suction cup structures on their front legs.They use these to grab passing females and attach to their dorsal surfaces.…

Copelatus minor is a species of diving beetle.It is part of the Copelatus genus, which is of the Copelatinae subfamily and the Dytiscidae family.…

The male has a suction disk on each foreleg.Sunburst diving beetles live in ponds and lakes and swim well.When their water source dries up they will fly to a new one.…